Paper press



N. J. NHKS PAPER PRESS Feh 9,, 1932.

Filed May 17, 1930 2 sheets-sheet v VE/V 7 1 42 77.42429.

+ JMVM A TTORNE Y5 Feb. 9, 1932. J, s L$44,294

PAPER PRESS Filed May 17, 1950 2 Sheets-Sheet 2 1N VENTOR 7 M. 2%.-

JW IJMLMQN A TTORNE Y6 Patented Feb. 9, 1932 UNITED STATES PATENT OFFICE NIGKOLAS ms, OE GHILLICOTHIE, OHIO PAPER PRESS Application fled Kay 17, 1930. Serial No. 453,245.

This invention relates to improvements in presses for use in connection with sheets of newly made paper, adapted to be used for drying the sheets of paper.

5 It is particularly the object of thls invention to provide, in connection with presser rollers adapted to have fed between them a continuous moving strip of felt with a strip of Wet paper supported thereon for press ng 10 the water from the paper, means for removlng the water from the felt absorbed from the wet paper. This strip of felt is somewhat wider than the sheet of paper, and as the two pass between the rollers the water is forced out of the sheet of paper and partly absorbed by the strip of felt. However, the part of the felt immediately beneath this sheet of paper retains a very little of the water, while the parts of the strip of felt beyond the edges 29 of the sheet of paper retain all of the moisture or water absorbed by them from the sheet of paper. This is due to the fact that the edges of the strip of felt are not pressed, and being not pressed retain the water absorbed from the sheet of paper.

This invention has for its object means to remove this water absorbed by the edges of the strip of felt. For that purpose there is provided on each side of the strip of felt a suction member adapted to draw or suck from the felt the water retained therein as the strip of felt travels after passing between the two presser rollers.

It is particularly the object of this invention to provide on each edge of the strip of felt, adjacent the presser rollers, a vacuum means connected with some pump for the purpose of sucking or pumping the moisture or water from the edges of the felt as it travels along after the paper has been pressed.

By drawing the watel from the edge of the felt it increases the life of the felt, and the life of the presser rollers. The water forcing its way through the press wears off the edge of the presser rollers and also wears the nap ofl the edge of the felt.

These and other objects will appear from the following description taken in connection withthe drawings.

Referring to the drawings:

Figure 1 is a side elevation of an apparatus used for drying sheets of paper.

Figure 2 is a top plan view of a section of the strip of felt, and a section of the sheet of wet or moist paper after they have passed between the presser rollers. This view shows the edges of the felt containing the moisture therein before removal and after the moisture has been removed.

Figure 3 is a top plan view of one of the vacuum cylinders or tubes applied beneath the edge of the felt strip.

Figure 4 is a side elevation of the vacuum tube shown in Figure 3.

Figure 5 is a transverse section through the tube and the felt.

In Figure 1 there is shown an apparatus for supporting and conveying the sheet of paper. This apparatus is composed essentially of a frame 1 and rollers for supporting and permitting the travel of the sheets of paper and strips of felt. The sheet of paper is indicated by the numeral 2 and is fed from some suitable source. This sheet of paper is shown supported by a plurality of guide rollers 3. -There is also shown for use in connection with the sheet of paper a strip of wool felt 4. This strip of felt is used-in connection with drying the paper as it passes between the two rollers.

The felt is in a continuous strip and is supported by guide rollers 5. Suitable actuating means may be provided for causing the felt strip to travel at a certain rate of speed, which is the same rate of speed for the sheet of paper. The felt and sheet of paper are brought together just before they reach a pair of presser and dryer rollers 6. As the two pass between these rollers the sheet of paper is supported on top of the strip of felt and is somewhat narrower than the strip of felt. The strip of felt is wider than the length of the rollers 6. These rollers may be of any suitable length and size. They are usually one to three feet in diameter and may be thirty-six to three hundred and fifty inches in length. Heat may be provided for heating the rollers if necessary.

As the sheet of paper and the strip of felt pass between the rollers the water in the paper is pressed out and runs out over the rollers, or is caught by some means and conveyed away so that it is removed from the presence of the strip of felt and the sheet of paper. The pa rt of the felt immediately beneath the sheet of paper comes from between the presser rollers in a substantially dry condition, owing by the numeral 7, while the lateral edges that have absorbed the moisture from the sheet of paper are indicated by the numeral 8. For the purpose of removing the moisture from the edges of the strip of felt there is provided on each side of the felt strip a vacuum tube 9. This tube is shown in Figures 3, 4 and 5. This tube is just long enough to extend across the wet edge of the felt strip and is cylindrical in shape, having an opening 10 in the upper surface thereof for the purpose of receiving the water or moisture from the edge of the felt strip.

Extending from this tubular member 9, is a pipe 11 connected at its lower end to some vacuum means or water pump 12. The operation-of the pump 12 suc s or draws the moisture through the opening 10 down through the pipe 11, through the pump 12 and out through a pipe 13. After the strip of felt passes the vacuum tubes 9, one on each side of the strip of felt, the water has been removed from the felt so that it has a consistent, uniform appearance throughout the whole cross section thereof, as indicated in the righthand end of the strip as shown in Figure 2.

In the operation of this apparatus the strip of felt is caused to travel over the rollers 5 and between the presser rollers 6. At the same time the sheet of paper is caused to travel around the rollers 3 and on top of the strip of felt, with a space between the edges of the sheet of paper and the edges of the strip of felt. After the two thus placed have passed between the rollers 6 so that the water is pressed from the sheet of paper, the strip of felt continues substantially forward in a straight line over the vacuum tubes 9, while the sheet of paper follows for some distance around the circumference of the upper roller 6 and passes over a guide roller 3 above the rollers 6. From this guide roller 3 the sheets of paper are carried on to be similarly treated again, or for any other treatment'desired.

I desire to comprehend within my invention such modifications as may be clearly embraced within my claims and the scope of my invention.

Having thus fully described my invention,

- Letters Patent, is:

what I claim as new and desire to secure by 1. In a paper press for pressing and drying wet sheets of paper, a pair of pressing and drying rollers, a continuous strip of feltadapted to travel between said rollers, means for supporting a sheet of paper and causing it to move between rollers supported. by the strip of felt, whereby the water is pressed out of the paper and partly taken up gy the strip of felt, and means for removing the water from the felt as it travels.

2. In a paper press for pressing and drying wet sheets of paper, a pair of coacting presser rollers, a strip of felt adapted to pass between said rollers, means to arrange a sheet of paper over said strip of felt and cause it to pass between the rollers to press the water out of the wet sheet of paper into the strip of felt, and means to remove from the strip of felt the water absorbed from the sheet of paper.

3. In a paper press for pressing and drying wet sheets of paper, a pair of coacting presser rollers, a strip of felt slightly wider than the sheets of paper adapted to pass between the rollers, means to arrange a sheet of paper on said strip with the edges of the paper spaced. from the edges of the strip of felt, means to cause the paper and felt thus arranged to pass between said rollers, whereby'the water is pressed from the sheet of paper and partly absorbed by the edges of the strip of felt, and means beneath the edge of the strip of felt to suck the absorbed water therefrom.

4. In a drying apparatus, in combination with a strip of felt adapted to absirb moisture, a vacuum member engaging one side of said strip of felt, and a suction means connected to said vacuum member to draw moisture from said strip'as it moves.

5. In a drying apparatus, in combination with a strip of felt adapted to absorb moisture, a vacuum member engaging each edge of said strip of felt, and means connected to each vacuum member to produce a partial vacuum therein, whereby moisture is drawn from the strip of felt.

6. In a drying apparatus, in combination with a strip of felt adapted to absorb moisture, means to cause the moisture to collect along the edges of the strip, a plurality of vacuum members engaging the edges of said strip of felt, a tube member extending from each vacuum member, and a pump connected to said tube members for producing a partial vacuum in said vacuum members and drawing moisture from the strip of felt.

7. In an apparatus for drying a wet sheet of paper, in combination with a strip of felt of greater width than the sheet of paper, means to arrange a wet sheet of paper on said strip of felt and cause them to move together, means to press the sheet of paper and strip of felt thus arranged and moved, and vacuum means adjacent the edges of said strip for removing from the strip of felt the water absorbed from the sheet of paper.

8. In an apparatus for drying wet sheets of paper, in combustion with a strip of felt of greater width than the sheets of paper, means to arrange a wet sheet of paper on said strip of felt with the marginal edges of the strip left uncovered by the sheet of paper, a pair of roller means to press the water from the sheet of paper, whereby the marginal edges of the strip of felt become wet by absorption, and a vacuum means adjacent each marginal edge of the strip of felt to remove therefrom the absorbed moisture.

9. In a. drying apparatus for removing moisture from a wet sheet, on absorption strip wider than the wet sheet, means for placing-the wet sheet on the absorption strip, means to press the two together to remove the moisture from the sheet and partly absorbed by the edges of the absorption strip, and a pair of vacuum tubes, one on each edge of the absorption stripto remove the moisture therefrom after it has been pressed from the wet sheet.

10. In a drying apparatus for continually moving sheets of wet paper, a pair of pressure rollers, a continuously moving continuous strip of felt passing between said rollers and carrying therewith a sheet of paper, and a vacuum member under said strip of felt adjacent said rollers to remove from the strip of felt the moisture absorbed from the wet sheet as it passed between the rollers.

11. In a drying apparatus for a continuously moving sheet of wet paper, a pair of cooperating rollers longer than the width of the sheet of paper, a strip of felt wider than the sheet of paper adapted to support said sheet of paper and move with said sheet between said rollers, whereby the moisture in the sheet is pressed out and partly absorbed by the margins of the strip of felt, and a suction means on each side of the strip adjacent the rollers to remove the absorbed moisture, said suction means including a vacuum member and a pump means.

In testimony whereof, I aifix my signature.

NICKOLAS J. NIKS. 

